RESUMO

The removal from the solution and the accumulation of As, Cd and Cr by Typha latifolia was studied. Small plants of T. latifolia, collected from a non-contaminated site, were exposed to individual concentrations of As, Cd and Cr for 10 days. The ability of T. latifolia for the removal of toxic elements ranged from 23% to 54% for As, 43%-55% for Cd and 28%-73% for Cr. The accumulation of toxic elements in T. latifolia occurred mainly in the roots. The results suggest that T. latifolia can be considered as an interesting alternative for treating aquatic effluents polluted with toxic trace elements.

Assuntos

Arsênio/isolamento & purificação , Cádmio/isolamento & purificação , Cromo/isolamento & purificação , Typhaceae/metabolismo , Poluentes Químicos da Água/isolamento & purificação , Arsênio/metabolismo , Biodegradação Ambiental , Cádmio/metabolismo , Cromo/metabolismo , Raízes de Plantas/metabolismo , Brotos de Planta/metabolismo , Poluentes Químicos da Água/metabolismo